Laptop showing black screen after start

shanzey Posts 1 Registration date Thursday June 7, 2018 Status Member Last seen June 7, 2018 - Updated on Jun 7, 2018 at 04:52 PM

I have dell latitude E6410. My laptop showing black screen when I start it it's fan spins and it immediately shuts down after 5 seconds but the three lock symbols keeps on flashing blue light and lock A keeps blinking what should I do???